MLBEDSW-10906: Increase raw format shapes to 6D
Was previously 4D, which meant that networks with >4D inputs or
outputs would have their shapes truncated in the raw format
metadata.
Signed-off-by:
Johan Gunnarsson <johan.gunnarsson@arm.com>
Change-Id: I0c9e791940d04418a59de609f99bd66f60deb903